Preheat oven to 400 degrees. Heat olive oil in a large skillet over medium heat. Sauté the onion, bell pepper, and jalapeno until they begin to soften, about 4 to 5 minutes. Turn up the heat to medium-high and add the ground beef to the pan. Cook the meat until brown all the way through. Add the tomatoes, beans, corn, and spices. Cook for another 2 to 3 minutes. Pour the mixture into a rectangular baking dish, top with cheese and then frozen sweet potatoes. Bake for 30 to 35 minutes or until the sweet potatoes are heated all the way through. Serve topped with sour cream if desired.
Per serving (1/8th pan): 360 calories, 17 g fat, 24 g protein, 32 g carbohydrate, 7 g fiber, 745 mg sodium